<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <style>
        .btn{
            display: inline-block;
            line-height: 1;
            white-space: nowrap;
            cursor: pointer;
            color: #409eff;
            background: #ecf5ff;
            border-color:#b3d8ff;
            text-align: center;
            box-sizing: border-box;
            padding: 12px 20px;
            font-size: 14px;
            border-radius: 4px;
        }
    </style>
    <script src="../js/vue.js"></script>
    <div id ="app">
        <counter inline-template>
            <button @click="num++">点击{{num}}次</button>
        </counter>
        <counter inline-template>
            <span class="btn"  @click="num++">计数{{num}}次</span>
        </counter>
    </div>
    <script>
       Vue.component('counter',{
            data:function(){
                return{
                    num:0
                }
            },
            template:'<button @click="num++">点击{{num}}次</button>'
        })
        let app = new Vue({
            el:"#app",
    })
    </script>
</body>
</html>